53 



IV. Summary. 



The artificially developed Macherie was planted, after the 

 " dying off " of the breeding material had begun, among the 

 caterpillars of the gypsy moth in the following localities, the de- 



rig. 4. Diagram showing percentage of living eggs in healthy colonies. 



tails in regard to these experiments being given in the preceding 

 pages. The number of apparently living eggs was reduced to 

 the following percentages : 



Per Cent. 



Concord, Mass, (firewater's estate), 11 



Carver, Mass, (southwest of Makepeace's cranberry bog), ... 13 



Carver, Mass, (on Wenham Street), 45 



Boxford, Mass, (near the almshouse), 10 



Boxford, Mass, (on Highland Street), 4 



West Bedford, Mass. (Swett's estate), per cent. + 22^ per cent. = 

 Haverhill, Mass, (west of East Broadway), 



